Recent content by RBIS65

Oil analysis after oil change to see how much the oil has degraded

Reaching tight tolerances faster?

Yes I know. I've been using Motul 10W60 which has a high HTHS as well. To my knowledge on HTHS at beginning of the oil life, Amsoil is the best. A few km down the road, ... could be the Redline 15W50 end up being better. Only test can tell I guess.

I'm not that worried about below 32F temps because I do not use the car if it is freezing (ice and cup 2 tires is a recipe for crash). In average, I change the oil every 2000-3000 miles so not sure if the oil shearing is that much of a factor to me.

Again I'm not an oil expert... but they sell 15w50 and 10w60 rated oils. Why would they recommend 15w50? Agree with the poor points being irrelevant. However the Redline 15w50 is indeed less viscous at 40°C. Don't you think that would make a difference ?

I recently viewed this: https://www.bimmerworld.com/BMW-Engine-Oil/ Focusing on the oil for S65 engines: Our top pick is the 15W50 - it has a thinner viscosity and lower pour point than factory BMW 10W60 even with a SAE 15W grade. This lower viscosity when cold means the oil penetrates the...

Hi all, If I may, I would like to extend a bit the scope of this chat "Ravenol RSS 10W-60 - Worth it?"... I recently viewed this: https://www.bimmerworld.com/BMW-Engine-Oil/ Focusing on the oil for S65 engines: Our top pick is the 15W50 - it has a thinner viscosity and lower pour point than...

Viscosity and HTHS.

There are some from 5w60, dare I say it, questionable brands and Penrite Interesting this BMW oil. I will look into it. BTW sorry if I forgot about S54 owners. Eurofins IESPM. Yes that is in Europe. All in all, thanks for your answers. Then it confirms that HTHS is the most important for...

Did two of those but only got KV40 showing 140 and 139 mm2/s after 2000ish miles. 163 mm2/s as per Motul datasheet. What does this mean for you and in regards to my three questions/topics?

Hi there, Like so many S85 or S65 owners, we are scared to death about rod bearing failures. S65 owners, like me, are now also freaking out about main bearing failures... With that out of the way, after doing research it seems we can mitigate these failures by switching to a finner oil (i.e...